Median

Find the median of a stream of binary integers as fast as possible.

Input: 100 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The median value, printed as a decimal string. The median is defined as the element at index N/2 (i.e., a[50000000]) in the sorted array.

Restrictions:20s512Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.9	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Oct 20, 2024 00:31	0	0	0	0	0	Error: Exit with code 1: not a dynamic executable 67760 30976 34195 2227912352 1250000 617977 629926 2231422269 2231422269 3000000 2228422269 2234422269 99999744 100000000 2228422269 2234422269 50000000 100000000 2228422269 2234422269 50057652 142604 ...	stderr
2	Oct 20, 2024 00:29	0	0	0	0	0	Error: Exit with code 1: not a dynamic executable 67760 33743 37142 2055544842 1250000 618627 631359 2055566833 2055566833 3000000 2052566833 2058566833 99999744 100000000 2052566833 2058566833 50000000 100000000 2052566833 2058566833 49799802 153909 ...	stderr
3	Oct 20, 2024 00:28	0	0	0	0	0	Error: Exit with code 1: not a dynamic executable 67760 31547 35058 2180380258 1250000 619951 633146 2175686055 2175686055 3000000 2172686055 2178686055 99999744 100000000 2172686055 2178686055 50000000 100000000 2172686055 2178686055 49815041 160272 ...	stderr
4	Oct 20, 2024 00:27	0	0	0	0	0	Error: Exit with code 1: not a dynamic executable 67760 32117 35362 2156143124 1250000 619094 631552 2155106039 2155106039 3000000 2152106039 2158106039 99999744 100000000 2152106039 2158106039 50000000 100000000 2152106039 2158106039 50009245 149989 ...	stderr
5	Oct 20, 2024 00:23	0	0	0	0	0	Error: Exit with code 1: not a dynamic executable 67760 33228 36440 2088081406 1250000 621510 633424 2079798713 2079798713 3000000 2076798713 2082798713 99999744 100000000 2076798713 2082798713 50000000 100000000 2076798713 2082798713 49856631 142265 ...	stderr
6	Oct 20, 2024 00:31	2,957	46,257,096	22,224,000	2,020,000	2,437,120
7	Oct 20, 2024 00:31	2,975	56,456,069	23,379,000	1,016,000	2,392,064
8	Oct 20, 2024 00:31	2,975	54,508,044	21,347,000	3,049,000	2,428,928
9	Oct 20, 2024 00:31	2,975	47,975,306	23,382,000	1,016,000	2,420,736
10	Oct 20, 2024 00:31	2,977	46,491,835	21,361,000	3,051,000	2,449,408
11	Oct 20, 2024 00:23	2,978	46,148,724	24,416,000	0	2,383,872
12	Oct 20, 2024 00:31	2,979	45,919,881	21,377,000	3,053,000	2,502,656
13	Oct 20, 2024 00:31	2,989	46,747,126	23,486,000	1,021,000	2,355,200
14	Oct 20, 2024 00:31	2,990	50,599,686	23,493,000	1,021,000	2,506,752
15	Oct 20, 2024 00:23	2,992	52,652,914	24,534,000	0	2,363,392
16	Oct 20, 2024 00:31	3,002	49,461,095	23,594,000	1,025,000	2,502,656
17	Oct 20, 2024 00:23	3,005	54,173,142	22,592,000	2,053,000	2,310,144

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1